Swimmy: A Framework of Multi-Agent Instruction System for Children. - Koji Yokokawa (C5, 2005)

Script Synthesis Tool for Non-Experienced Programmers. - Koji Yokokawa (C5, 2006)

Integration of Expression and Analysis Using Constructive Scrapbook. - Takeshi Sunaga; Koji Yokokawa; Won Jae-sung (C5, 2009)

Using Zuzie2 to Exchange Viewpoints for a Broader Outlook. - Koji Yokokawa; Takeshi Sunaga (C5, 2010)